The internal high pressure forming process comprises a low pressure stage and a high pressure stage, a sealing of the low pressure stage is achieved through a sealing structure formed by the rubber ring which is tightly pressed by a close matching between a internal wall of the tube blank and the punch head; with the increasing of the pressure, the blade-shaped protuberance is inserted into the end part of the tube blank, so the end part of the tube blank and the punch head are more tightly combined together, and the rubber ring is more tightly pressed at the same time, thus forming the more effective sealing structure and realizing high pressure sealing.
基于1个网页-相关网页
应用推荐